DE69325190T2 - Method and device for detecting undissolved gaz in hydraulic systems - Google Patents

Method and device for detecting undissolved gaz in hydraulic systems

Info

Publication number
DE69325190T2
DE69325190T2 DE69325190T DE69325190T DE69325190T2 DE 69325190 T2 DE69325190 T2 DE 69325190T2 DE 69325190 T DE69325190 T DE 69325190T DE 69325190 T DE69325190 T DE 69325190T DE 69325190 T2 DE69325190 T2 DE 69325190T2
Authority
DE
Germany
Prior art keywords
medium
gaz
hydraulic systems
detecting
undissolved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69325190T
Other languages
German (de)
Other versions
DE69325190D1 (en
Inventor
Klaus Leonhard Witt
Willi Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sun Test Systems BV
Original Assignee
Sun Electric Systems BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL9200128A external-priority patent/NL9200128A/en
Priority claimed from NL9200995A external-priority patent/NL9200995A/en
Application filed by Sun Electric Systems BV filed Critical Sun Electric Systems BV
Application granted granted Critical
Publication of DE69325190D1 publication Critical patent/DE69325190D1/en
Publication of DE69325190T2 publication Critical patent/DE69325190T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F15B19/005—Fault detection or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding

Abstract

Method and device for detecting undissolved gas in a hydraulic control system of the type containing a hydraulic-medium-pressure pump and a feed reservoir, based upon checking the compressibility of the medium and deducting the amount of undissolved gas from the thus obtained information by taking into account that an increase of the amount of undissolved gas in the medium results in a decrease of the compressibility of this medium. <IMAGE>
DE69325190T 1992-01-23 1993-01-19 Method and device for detecting undissolved gaz in hydraulic systems Expired - Fee Related DE69325190T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9200128A NL9200128A (en) 1992-01-23 1992-01-23 Detecting undissolved gas in hydraulic control system
NL9200995A NL9200995A (en) 1992-06-05 1992-06-05 Method and device for detecting undissolved gas in a hydraulic control system

Publications (2)

Publication Number Publication Date
DE69325190D1 DE69325190D1 (en) 1999-07-15
DE69325190T2 true DE69325190T2 (en) 1999-10-28

Family

ID=26646927

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69325190T Expired - Fee Related DE69325190T2 (en) 1992-01-23 1993-01-19 Method and device for detecting undissolved gaz in hydraulic systems

Country Status (4)

Country Link
EP (1) EP0552841B1 (en)
AT (1) ATE181142T1 (en)
DE (1) DE69325190T2 (en)
ES (1) ES2134239T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012221954A1 (en) * 2012-11-30 2014-06-05 Robert Bosch Gmbh Gas detection device for detecting presence of air bubbles in hydraulic oil in e.g. oil circuit for lubricating engine of hydraulic hybrid vehicle, has control device including display unit, by which presence of gas in fluid is displayed

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004028C2 (en) * 1996-09-13 1998-03-16 Sun Electric Systems Bv Method for determining the amount of undissolved gas in a hydraulic system.
DE102004038801B4 (en) * 2004-08-10 2014-05-22 Bayerische Motoren Werke Aktiengesellschaft Method and device for detecting gas inclusions in a viscous medium
EP2302270B1 (en) 2009-09-29 2012-09-12 Sun Test Systems B.V. A method for determining a functioning of a gas bleed valve
DE102013224744B4 (en) * 2013-12-03 2024-04-04 Zf Friedrichshafen Ag Method for reducing air buildup
CN110985462B (en) * 2019-12-12 2021-08-06 四川凌峰航空液压机械有限公司 Hydraulic system for eliminating pulse test actuating cylinder and pipeline gas thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089206A (en) * 1975-09-27 1978-05-16 Maschinenfabrik Hennecke Gmbh Method and apparatus for measuring the proportion of undissolved gas in a liquid component for the production of foam materials
FR2460409A1 (en) * 1979-07-05 1981-01-23 Ams Sa METHOD AND DEVICE FOR CONTROLLING DEGASSING OF A HYDRAULIC CIRCUIT
JPS5621036A (en) * 1979-07-27 1981-02-27 Polyurethan Eng:Kk Measuring method for bubble content of liquid containing bubble and apparatus thereof
FR2474196A1 (en) * 1980-01-22 1981-07-24 Armines Pressure versus volume measurer of gas-liq. mixt. - uses floating piston with test compound above and hydraulic fluid below with thermocouple in moving probe to detect liq. surface
DE3233551C2 (en) * 1982-09-10 1985-02-28 Danfoss A/S, Nordborg Device for detecting the gas content in a pressurized liquid system
FR2547051A1 (en) * 1983-06-06 1984-12-07 Petroles Cie Francaise Measuring apparatus for studying the relationships between the pressure and the liquid and/or gaseous volumes for a product with liquid and/or gaseous phases
FR2572530B1 (en) * 1984-10-26 1986-12-26 Armines AUTOMATIC APPARATUS FOR MEASURING VAPORIZED FRACTIONS OF PURE AND / OR MIXED BODIES AND LIQUID AND / OR VAPOR PHASE DENSITIES WITH SAMPLING OF VAPOR PHASE SAMPLES
CN85104763B (en) * 1985-06-13 1988-08-24 沈汉石 Method and device for removing gas cells in a hydraulic system
IT1241117B (en) * 1990-04-12 1993-12-29 Afros Spa PROCEDURE AND EQUIPMENT FOR MEASURING QUANTITY OF GAS DISPERSEIN A LIQUID

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012221954A1 (en) * 2012-11-30 2014-06-05 Robert Bosch Gmbh Gas detection device for detecting presence of air bubbles in hydraulic oil in e.g. oil circuit for lubricating engine of hydraulic hybrid vehicle, has control device including display unit, by which presence of gas in fluid is displayed

Also Published As

Publication number Publication date
EP0552841B1 (en) 1999-06-09
ES2134239T3 (en) 1999-10-01
EP0552841A3 (en) 1994-12-21
EP0552841A2 (en) 1993-07-28
DE69325190D1 (en) 1999-07-15
ATE181142T1 (en) 1999-06-15

Similar Documents

Publication Publication Date Title
TW330241B (en) The apparatus and method for determining parameter of a particle in fluid
DE69635194T2 (en) Syringe adapter for injector for frontal loading
DE69333846D1 (en) METHOD FOR MIXING IMAGES AND DEVICE THEREFOR.
DE50108897D1 (en) Apparatus and method for the coordination and adjustment of agricultural vehicles
DE68900423D1 (en) METHOD AND DEVICE FOR TRANSMITTING INFORMATION BY CABLE AND BY PURGE PRESSURE SHAFT.
FR2721728B1 (en) Method and device for automatically generating spreadsheets.
FR2647924B1 (en) METHOD FOR VERIFYING THE INTEGRITY OF SOFTWARE OR DATA, AND SYSTEM FOR CARRYING OUT SAID METHOD
ATE200359T1 (en) DEVICE AND METHOD FOR GUIDING FLOWS OF PEOPLE ON MASS TRANSPORTATION
DE69300024D1 (en) Device for generating reference voltages.
DE69621341D1 (en) DEVICE FOR PARALLEL ALIGNMENT OF MACROMOLECULES AND USE THEREOF
MY118656A (en) System and method for initiating operation of a computer system
DE69325190T2 (en) Method and device for detecting undissolved gaz in hydraulic systems
AP9901607A0 (en) Method and apparatus for continuous flow isoelectric focusing for
EP1102474A3 (en) Image processing apparatus, method and memory medium therefor
DE60019871D1 (en) Method and apparatus for assigning unique device identifiers in a distributed computer system
ES2072098T3 (en) SYSTEM AND METHOD FOR MONITORING FLUID DISCHARGE.
DE69507463D1 (en) DEVICE AND METHOD FOR MONITORING TRAFFIC
ES2156337T3 (en) METHOD AND DEVICE FOR DETERMINING THE AMOUNT OF GAS NOT DISSOLVED IN A HYDRAULIC SYSTEM.
ES2157013T3 (en) VERIFICATION OF FLUID SYSTEMS.
DE59813282D1 (en) Method and device for transmitting data between a position-measuring device and an evaluation unit
DE69113952D1 (en) Device and method for printer control circuitry.
ATE138750T1 (en) DEVICE FOR CHECKING WRITINGS
AU6659881A (en) Optical data storage systems
FI953295A (en) A method for burning lime in a fluidized bed and an apparatus for carrying out the method
TW333623B (en) Functional evaluation method and apparatus for image forming apparatus

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee